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Compile Eventmachine 1.0.3 in Ruby 2.1.3 on Windows

eventmachine didn’t release a new gems for a long time, so we have to manually compile if you decide using Ruby 2.1.3, it’s probably the most complex gems which can still successfully install on windows as far as I known, here is the steps for your interesting:

Now you need using updated version of rake-compiler (v0.9.3) to continue, so change eventmachine.gemspec to that version and do the bundle install again.

Now we can running rake package and it should generate the updated 1.0.3 gem file you need, but before that you need another depend lzma package mentioned in Ruby Installer Google Group, I only tested x86 but the x64 should be same.